Milestone map
Milestone map
3 milestones
Build 1km pool swim base
4–8 weeks (3× per week)
Swim 1km continuously in a pool without stopping. Pool swimming teaches pacing and technique in a controlled environment before you add open water variables. Aim for consistent 100m splits — a swimmer who can hold 2:00/100m for 10 lengths is ready to start open water acclimatisation.
Proof required
Submit: (1) pool swim log showing 3+ consecutive 1km swims in the past 4 weeks; (2) note of your average 100m split from the most recent swim.
What gets checked
- All three 1km swims are continuous — no wall-hanging rests between lengths
- 100m split is recorded from a watch or pool clock — not estimated
- Log covers a minimum 4-week window showing consistency, not just three recent sessions
Resources
Foundation: start here · Depth: go deeper · Mastery: for the dedicated
Foundation
Depth
Complete first open water acclimatisation swims
3–4 weeks
Complete three open water sessions of at least 400m each, wearing a wetsuit if the water is below 16°C. Focus on sighting (lifting your head every 10 strokes to navigate), acclimatisation to cold, and managing the disorientation of no lane lines. Swim in a permitted venue with a safety marshal or buddy.
Proof required
Submit: (1) GPS track from watch or tow float device showing route and distance for all three swims; (2) note of water temperature and wetsuit use for each session.
What gets checked
- GPS track shows the swim route — not just start/end points with a straight line
- Water temperature is recorded — not omitted
- All swims are at a permitted open water venue with safety supervision noted
Resources
Foundation
Depth
Finish a 1km open water event
1 day (event)
Complete a 1km open water swim at a permitted organised event — a club time trial, a local open water race, or a monitored charity swim counts. An organised event ensures course measurement and safety cover. Submit your official finish confirmation or results entry.
Proof required
Submit: (1) official finish certificate, results screenshot, or event confirmation showing your name, event name, distance, and date; (2) GPS track of the swim if available.
What gets checked
- Event confirmation shows a real organised event — not a solo swim you measured yourself
- Distance is stated as 1km or greater on the event documentation
- Safety supervision is inherent in the event context (organised open water events require it)
Resources
Foundation